retrofuturistic UK /ˌɹɛtɹəʊˌfjuːt͡ʃəˈɹɪstɪk/US /ˌɹɛtɹoʊˌfjut͡ʃəˈɹɪstɪk/ adjective1 •Of or relating to how the future was inaccurately imagined in the past; resembling an outdated vision of the future. formsmore retrofuturistic · most retrofuturistic